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 VERY useful booklet 
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Post VERY useful booklet
Free, and very useful

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Gee Three Eee Jay Ess - RSGB, SARL, G-QRP, FISTS, EPC
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Thu Jul 09, 2015 3:15 pm
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 VERY useful booklet 
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Post Re: VERY useful booklet
Free, but full of the deficiencies we've come to expect from Sevick: almost no common-mode data, 4:1 Guanella baluns built on a single core etc etc.

Good if you want to build transmission-line transformers; sadly lacking if you want to build good baluns, chokes etc.

Steve G3TXQ


Thu Jul 09, 2015 3:24 pm
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 VERY useful booklet 
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G3TXQ wrote:
Free, but full of the deficiencies we've come to expect from Sevick: almost no common-mode data, 4:1 Guanella baluns built on a single core etc etc.

Good if you want to build transmission-line transformers; sadly lacking if you want to build good baluns, chokes etc.

Steve G3TXQ



Good comment, save people some time.
I only found it yesterday, so haven't looked carefully at it, and haven't tried anything from it.

Looking at it it looked like "the answer" and is if it was going to be used all the time. Obviously not then!

Pity!

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Thu Jul 09, 2015 4:30 pm
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 VERY useful booklet 
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Sevick never really seemed to understand common-mode issues properly; what little he mentions in his books is quite wrong in places.

His books are full of good stuff about differential-mode performance - for example how to build a transformer that will give you a good SWR and accurate impedance transformation over a wide frequency range. But if you wanted to build a balun that would achieve good balance between a tuner and a ladderline/doublet, or feeding an OCFD, you wouldn't find the information in his books.

Unfortunately there's not really an alternative, so many folk consider his books to be the "holy grail". It's a shame he became SK because there were signs in some of the later book editions that he was beginning to learn; he even admitted in one that he had made an error in completely overlooking current baluns in favour of voltage baluns :shock:

Steve G3TXQ


Thu Jul 09, 2015 4:59 pm
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 VERY useful booklet 
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G3TXQ wrote:
It's a shame he became SK because there were signs in some of the later book editions that he was beginning to learn; he even admitted in one that he had made an error in completely overlooking current baluns in favour of voltage baluns :shock:

Steve G3TXQ


Maybe he came back to earth as M0CVO :lol:


Thu Jul 09, 2015 6:54 pm
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 VERY useful booklet 
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Why not write one Steve - seems to me you have the knowledge to do it.


Thu Jul 09, 2015 8:01 pm
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Yeah, Go Steve, Go Steve, Go Steve......
We want the G3TXQ guide to Antennas, Baluns and all things ham radio related.
A big Steve FAQ :) :)


Fri Jul 10, 2015 6:50 am
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 VERY useful booklet 
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Steve,

That suggestion was not 'tongue in cheek'.

Many years ago, before I retired, part of my job was technical writing and I have perused your website so I know you can write well.

Tim


Fri Jul 10, 2015 7:42 am
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 VERY useful booklet 
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I have mused the idea of writing a dummies guide to CADSTAR (PCB program) but realise how much & how long it will take.
My tongue was also in my cheek lol.

Still - it would be a book I'd buy :)


Fri Jul 10, 2015 1:34 pm
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 VERY useful booklet 
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G7FQW wrote:
Yeah, Go Steve, Go Steve, Go Steve......
We want the G3TXQ guide to Antennas, Baluns and all things ham radio related.
A big Steve FAQ :) :)


I've often thought this. I think I may have suggested it but I can't remember.

From what I have seen there is so much crap on the internet regarding this subject. A proper book on the subject would be brilliant.

Can I have a signed copy please?


Fri Jul 10, 2015 1:44 pm
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 VERY useful booklet 
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I'm flattered you folks think I should publish a book :blush:

It's not likely to happen, but I have been thinking I could add quite a lot more topics to my web site, and possibly structure it more logically. Sounds like a project for next winter!

Steve G3TXQ


Fri Jul 10, 2015 1:56 pm
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 VERY useful booklet 
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Yay!


Fri Jul 10, 2015 8:49 pm
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